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(No Model.) 2 Sheets-Sheet 1'.

AQBRBDENBERG.

BOOK BINDING MAGHINE.

No. 128,7111. Patented May 27, 1890.

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(No Model.) 2 Sheets-Sheet 2. A BREDENBERG.

BOOK BINDING MACHINE.

No. 428,741. Patented May-27,1890. I

A TTOHNEY UNITED STATES PATENT OF ICE.

ALFRED BREDENBERG, OF BROOKLYN, ASSIGNOR TO CHARLES WV. LOVELL, OF NEIV YORK, N. Y.

BOOK-BINDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 428,741, dated May 27, 1890.

Appli filed February 8, 1890. Serial No. 339,691. (No model.)

T at whom, it may concern: M is a bell-crank lever connected to the Be it known that I, ALFRED BREDENBERG, base of the sliding plate J by a pivoted link a citizen of the United States, and a resident N, pivoted to a bracket 0, made on the frame of Brooklyn, in the county of Kings and State I. The other end of the lever M is pivoted of New York, have invented certain new and by means of a link I to a stationary bar Q. 5 5' useful Improvements in Book-Binding Ma- The connection between the link P and the chines, of which the following is a specificabar Q is an adjustable one by means of a tion. threaded bolt and nuts R.

My invention relates to an improvementin S S are two clamps formed on the ends of IO automatic book or pamphlet binding masliding plates or bars T, which slide in suitchines of the class for which Charles WV. Lovell able slideways U, made on the verticallyand I filed an application for Letters Patent moving frame I. on July 18, 1889, it being known as Serial No. V Vare two bell-crank levers connected by 317,944, and it relates to that part of the apmeans of links W IV to the slide-plates T.

I 5 paratus in which the covers, after having The bell-crank leversVare pivoted to collars been attached to the back of the book, are XX, fast on the rods E. At theirlower ends pressed into intimate contact therewith and they are connected by pivoted links A A to then folded up snugly against the sides of the vertically-arranged rods B B, which slide book. through holes made in a plate 0, and at their 20 I refer to our said joint application for a lower ends are rigidly fastened to a plate D. general description of the machine, since it E is a spindle, which moves through a hole will not be necessary to describe in this patmade in the plate D and is rigidly fastened cut or illustrate in the drawings more than or is shouldered, as the case may be, to the those parts which refer to the present invenplate 0.

25 tion. F is a spring interposed between the two In the drawings hereof the same reference plates 0 and D. At its lower part the rod E letters refer to the same parts. is bifurcated, straddling the hub of the cam D,

Figure 1 illustrates a vertical cross-section and at its lower part it is provided with a of the machine immediately in rear of the roller G, which engages with the face of the 0 cover folding and stretching apparatus. Fig. cam D. 2 illustrates a top view of the parts shown in Various other devices seen upon the draw- Fig. 1. ings are the same as are fully described in the In both the figures the parts are shown in said prior application and do not require spetheir closed or cover-pressing condition. cific description here.

3 5 A A are the side frames of the machine. The operation of the apparatus is as fol- B is a shaft revolving in journals on the lows: After the book has had-the cover in unframe. This shaft is the same as the shaft folded condition attached to its back it is fed I set forth in said pending application. forward and isclamped by the clamps seen at O C are two cams keyed to the shaft B, the top of Fig. 1, as set forth in the said prior 40 and D is another cam keyed thereto. application, and is there temporarily held sta- 0 E E are vertically-moving rods which slide tionary. At this time, by the action of the through guides E, which are rigidly fastened cam O, the rods E are elevated, carrying upto the frame G of the machine. wardly the frame I and all parts attached to H H are rollers 'in the lower ends of the it. This occasions a rocking movement of the 5 rods E. bell-crank N on its pivot, which causes the 5 I is a frame supported on the upper ends plate J to quickly slide under the book. The of the rods E, and has vertical movement timing of the machineis such that the plate therewith. gets under the book before it has touched the J is a plate supported on rods K K, which book. At the same time the clamps S S are 50 slide through lugs L L on the frame I. caused to move inwardly by reason of the rocking of the bell-cranks V upon their central pivots, occasioned by the retention of their lower ends by the links A and rods 13. The adjustment of the apparatus being such that this effect is secured, and by the time the plate J has pressed the cover snugly up against the back of the book the clamps S, approaching at each side, squeeze the cover sidewise against the side of the book adjacent to the back, thus squaring the back of the book and folding and setting the cover. The arrangement of these parts is such that a final squeeze is given by the clamps S S, because, as the roller G goes over the extremity of the cam D, the spring F exerts a downward pressure upon the plate D, which pulls downward the lower ends of the bell-cranks V, thus subjecting the book to a spi'ingpressure between the clampsS S. This spring-pressure is of course self-adjusting, and slight differences in thicknesses of books are compensated thereby and also rupture of any of the parts is prevented. I secure adjustment of the apparatus to accommodate books of greatlydiitering thickness in any suitable way now very well known in the arts. As soon as the cover has been thus properly attached to the book the plate J first recedes, then the clamps S, then the clamps shown at the upper part of the machine release the book, which drops upon the belt-carrier II below. This is substantially the same belt-carrier as shown in the said pending application. It will be observed that all of the operations of the machine are automatic.

I do not limit myself to the details of construction shown, since it will be obvious to those who are familiar with this art that various modifications may be made therein and still the essence of my invention be employed.

I claim- 1. In a book or pamphlet binding machine,

automatic e0verattaehing devices comprising, essentially, clamps, whereby the book is held stationary, a vertically-moving plate which presses the cover against the back of the book, and laterally-acting clamps which fold and press the cover against the sides of the book, substantially as set forth.

2. The combination, in a book or pamphlet binding machine, of clamps which hold the ,book stationary, a plate which presses the cover against the back of the book, and laterally-acting clamps which fold and press the cover against the sides of the book, substantially as set forth.

The combination, in a book or pamphlet binding machine, of alaterally and vertically moving plate adapted to move under and also away from the book and press the cover against its back, and laterally-acting clamps adapted to fold and press the cover against the sides of the hook, substantially as set forth.

4. The combination, in a book or pamphlet binding machine, of automatically-acting vertically and horizontally moving clamping devices, whereby the cover is pressed upon the book, substantially as set forth.

5. The combination, in a book or pamphlet binding machine, of devices adjusted to attach the cover to the book, comprising, essen tially, an automatically-acting plate which presses the cover against the back of the book, and automatically-acting clamps which subsequentlypress the cover against the sides of the book, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 4th day of February, A. l). 1890.

ALFRED BREDENBERG.

Witnesses:

PHILLIPS ABBOTT, FREDERICK SMITH. 

